<template>
  <section>
    <!--工具条-->
    <el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
      <el-form :inline="true" :model="filters">
        <el-form-item>
          <el-input v-model="filters.keyword" placeholder="关键字"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" v-on:click="search()">查询</el-button>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleAdd">新增</el-button>
        </el-form-item>
      </el-form>
    </el-col>

    <!--列表-->
    <el-table :data="employees" highlight-current-row v-loading="listLoading"
              @selection-change="selsChange" style="width: 100%;">
      <!--就是每行前面的那个 小框框-->
      <el-table-column type="selection" width="55">
      </el-table-column>

      <el-table-column type="index" width="60">
      </el-table-column>
      <el-table-column prop="username" label="员工名称" width="120" >
      </el-table-column>
      <el-table-column prop="phone" label="员工电话" width="120" >
      </el-table-column>
      <el-table-column prop="email" label="员工邮箱" width="120" >
      </el-table-column>
      <el-table-column prop="age" label="员工年龄" width="120" >
      </el-table-column>
      <el-table-column prop="state" label="状态" width="120" sortable>
        <!--
          scope：它可以获取到一行的数据 通过 scope.row
        -->
        <template scope="scope">
          <span style="color:green" v-if="scope.row.state === 1">在职</span>
          <span style="color:red" v-else-if="scope.row.state === 0">离职</span>
          <span style="color: #8c939d" v-else>未知</span>
        </template>
      </el-table-column>
      <el-table-column prop="deptName" label="所属部门" >
      </el-table-column>
      <el-table-column label="操作" width="150">
        <template scope="scope">
          <el-button size="small" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!--工具条
     :disabled ： 是否展示 没有选中(数组长度为0)的时候 不能点击
                  选中了(数组长度不为0)的时候 可以点击
    -->
    <el-col :span="24" class="toolbar">
      <el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
      <el-pagination layout="prev, pager, next" @current-change="handleCurrentChange"
                    :current-page="currentPage" :page-size="pageSize" :total="total"
                     style="float:right;">
      </el-pagination>
    </el-col>

    <!--编辑界面-->
    <!--
    v-model：在elementUi2.x版本是双向绑定
              elementUi是1.x版本 是控制弹窗是否展示
    :rules="editFormRules" 输入框校验
    ref="editForm" ： 哪个表单引用
    prop="name" ： 输入框使用这个
    -->
    <el-dialog :title="title" :visible.sync="editFormVisible" :close-on-click-modal="false">
      <el-form :model="editForm" label-width="80px" :rules="editFormRules" ref="editForm">
        <el-form-item label="员工姓名" prop="username">
          <el-input v-model="editForm.username" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="员工电话" >
          <el-input v-model="editForm.phone" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="员工邮箱">
          <el-input v-model="editForm.email" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="员工年龄">
          <el-input-number v-model="editForm.age" auto-complete="off"></el-input-number>
        </el-form-item>
        <el-form-item label="状态">
          <el-radio-group v-model="editForm.state">
            <el-radio class="radio" :label="1">在职</el-radio>
            <el-radio class="radio" :label="0">离职</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="所在部门">
          <el-select v-model="editForm.departmentId" placeholder="请选择">
            <el-option
                v-for="item in depts"
                :label="item.name"
                :value="item.id">
              <!-- 存在下面两个的时候，下拉框展示，优先展示下面的-->
              <span style="float: left">{{ item.name }}</span>
              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.sn }}</span>
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="角色" prop="roles">
          <el-select v-model="editForm.roles" multiple placeholder="请选择">
            <el-option
                v-for="item in roleList"
                :label="item.name"
                :value="item.id">
              <span style="float: left">{{ item.name }}</span>
              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.sn }}</span>
            </el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click.native="editFormVisible = false">取消</el-button>
        <el-button type="primary" @click.native="editSubmit" :loading="editLoading">提交</el-button>
      </div>
    </el-dialog>

  </section>
</template>

<script>
import util from '../../common/js/util'
//import NProgress from 'nprogress'
import {
  getEmployeeListPage,
  removeEmployee,
  batchRemoveEmployee,
  editEmployee,
  addEmployee
} from '../../api/api';

export default {
  data() {
    return {
      roleList: [],
      options: [],
      depts: [],
      title:'',
      filters: {
        keyword: ''
      },
      employees: [],
      total: 0,
      pageSize:5,
      currentPage:1,
      listLoading: false,
      sels: [],//列表选中列

      editFormVisible: false,//编辑界面是否显示
      editLoading: false,
      editFormRules: {
        username: [
          {required: true, message: '请输入员工名称', trigger: 'blur'}
        ],
      },
      //编辑界面数据
      editForm: {
        id:null,
        username:'',
        phone:'',
        email:'',
        age:null,
        state:1,
        departmentId:null,
        roles: null
      },
    }
  },
  methods: {
    getDepts(){
      this.$http.get("/dept")
        .then(result=>{
          this.depts = result.data;
        })
    },
    search(){
      this.currentPage = 1;
      this.getEmployees();
    },
    handleCurrentChange(val) {
      this.currentPage = val;
      this.getEmployees();
    },
    //获取员工列表
    getEmployees() {
      // para 对象
      let para = {
        pageSize: this.pageSize,
        currentPage:this.currentPage,
        keyword: this.filters.keyword
      };
      // 开启列表忙等
      this.listLoading = true;
      // 我们要发送Axios请求
      this.$http.post("/emp", para)
          .then(result => {
            // 进到这里面来 肯定是请求成功的
            this.listLoading = false;
            this.employees = result.data.rows;
            this.total = result.data.totals;
          })
          .catch(result => {
            // 报错了的 请求失败
            this.$message({
              message: '网络异常，请稍后重试！',
              type: 'error'
            });
          })
    },
    //删除   row：代表当前行的数据
    handleDel: function (index, row) {
      this.$confirm('确认删除该记录吗?', '提示', {
        type: 'warning'
      }).then(() => {
        // 1.后端没有将错误返回到前端 2.请求成功 http请求状态码 200
        this.listLoading = true;
        // 就是我们数据库的id
        this.$http.delete("/emp/"+row.id)
          .then(result=>{
            // 一定是删除成功
            this.listLoading = false;
            this.$message({
              message: result.data.msg,
              type: result.data.success?'success':'error'
            });
            // 刷新一下列表 是否跳转到第一页 你们自己玩
            this.currentPage = 1;
            this.getEmployees();
          })
          .catch(result=>{
            // http请求不成功或者后端抛异常到前端了
            // 什么时候走catch 1. http请求不同 2.后端将异常抛给前端了
            this.$message({
              message: "网络异常，请稍后重试!",
              type: 'error'
            });
          })
      }).catch(() => {
        // 取消走这里

      });
    },
    //显示编辑界面
    handleEdit: function (index, row) {
      this.editFormVisible = true;
      this.title = "编辑"
      this.editForm = Object.assign({}, row);
    },
    //显示新增界面
    handleAdd: function () {
      this.editFormVisible = true;
      this.title = "新增"
      // 是将表单 置空
      this.editForm = {
        id:null,
        username:'',
        phone:'',
        email:'',
        age:null,
        state:1,
        departmentId:null,
        roles: null
      };
    },
    //编辑
    editSubmit: function () {
      this.$refs.editForm.validate((valid) => {
        if (valid) {
          this.$confirm('确认提交吗？', '提示', {}).then(() => {
            this.editLoading = true;
            // 将editForm表单的数据 拷贝到 一个对象中 为什么要这么做？
            let para = Object.assign({}, this.editForm);
            // 这块 在新增的时候 para.parentId 是数组传过来的 但是其实我们只要数组的最后一个
            // if (para.parentId){
            //   // 如果存在parentId
            //   para.parentId = para.parentId[para.parentId.length - 1];
            // }

            // 发送请求 新增/修改
            this.$http.put("/emp",para)
              .then(result=>{
                this.editLoading = false;
                this.editFormVisible = false;
                this.$message({
                  message: result.data.msg,
                  type: 'success'
                });
                this.currentPage = 1
                this.getEmployees();
              })
              .catch(result=>{
                this.$message({
                  message: "网络异常，请稍后重试 ！",
                  type: 'error'
                });
              })
          });
        }
      });
    },

    /*
    * 监听是否有选择 函数的参数 选中一整行数据的数组
    * */
    selsChange: function (sels) {
      this.sels = sels;
    },
    //批量删除
    batchRemove: function () {
      // 类似于stream流 将数组中的id 封装成数组
      var ids = this.sels.map(item => item.id);
      this.$confirm('确认删除选中记录吗？', '提示', {
        type: 'warning'
      }).then(() => {
        this.listLoading = true;
        // 发送请求
        this.$http.patch("/emp",ids)
          .then(result=>{
            this.listLoading = false;
            this.$message({
              message: result.data.msg,
              type: 'success'
            });
            // 刷新一下列表 是否跳转到第一页 你们自己玩
            this.currentPage = 1;
            this.getEmployees();
          })
          .catch(result=>{
            this.$message({
              message: "网络异常，请稍后重试！",
              type: 'error'
            });
          })
      }).catch(() => {

      });
    },
    getRoleList() {
      this.$http.get("/role")
          .then(result => {
            if (result.data) {
              this.roleList = result.data;
            }
          })
    }
  },
  mounted() {
    this.getDepts();
    this.getEmployees();
    this.getRoleList();
  }
}

</script>

<style scoped>

</style>